The Irishman, who was the first UFC fighter to hold world titles in two different weight divisions, goes into the fight as underdog but will fancy his chances of toppling Mayweather for the first time.

McGregor has been keeping his social media followers closely updated with his training with posts to his Instagram page.

And he has already hit out at Mayweather’s footwork after describing him as looking like he was in quicksand during a training session.

The fight is dubbed the richest in sporting history with McGregor set to pocket £78m whilst Mayweather could earn as astronomical £231m.